Morphology and evolution of the ejecta of Hale crater in Argyre basin, Mars: Results from high resolution mapping

M. R. El-Maarry, J. M. Dohm, G. Michael, N. Thomas, S. Maruyama

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

We use various data sets, including images from the High Resolution Imaging Science Experiment camera (HiRISE), to examine the ejecta of the generally fresh-looking Hale crater that occurs in the rugged mountain terrain of Nereidum Montes in the northern rim materials of the Argyre impact structure on Mars. Our investigation reveals that the distal parts of the Hale crater ejecta and other basin deposits behave like viscous flows, which we attribute to the secondary flow of ejecta mixed with water-ice-rich basin materials. Consistent with water-enrichment of the basin materials, our mapping further reveals occasionally deformed surfaces, including highly conspicuous features such as mounds and fractured plateaus that we interpret to be a result of periglacial modification, subsequent (including possibly present-day) to the transient localized melting and fluvial erosion caused by Hale-impact-generated heating. In particular, our morphometric analysis of a well-defined valley system west of Hale crater suggests that it may have been formed through hydrologic/glacial activity prior to the Hale impact, with additional modification resulting from the impact and subsequent geologic and hydrologic phenomena including glacial and periglacial activity.

Original languageEnglish
Pages (from-to)905-922
Number of pages18
JournalIcarus
Volume226
Issue number1
DOIs
Publication statusPublished - Sep 2013
Externally publishedYes

Fingerprint

ejecta
craters
mars
crater
Mars
high resolution
glacial phenomena
basin
secondary flow
impact structure
viscous flow
melting
rims
mountains
plateau
water
erosion
heating
valleys
ice

Keywords

  • Geological processes
  • Impact processes
  • Mars, Surface

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

Morphology and evolution of the ejecta of Hale crater in Argyre basin, Mars : Results from high resolution mapping. / El-Maarry, M. R.; Dohm, J. M.; Michael, G.; Thomas, N.; Maruyama, S.

In: Icarus, Vol. 226, No. 1, 09.2013, p. 905-922.

Research output: Contribution to journalArticle

El-Maarry, M. R. ; Dohm, J. M. ; Michael, G. ; Thomas, N. ; Maruyama, S. / Morphology and evolution of the ejecta of Hale crater in Argyre basin, Mars : Results from high resolution mapping. In: Icarus. 2013 ; Vol. 226, No. 1. pp. 905-922.
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